4870 black screen, fans stops, no post

[gmytis]

Hi,
i just bought ati 4870 from ebay, when installed on its own, on startup flashes 2 times 3 red leds, fan on card stops spining, no output to monitor, no beeps from motherboard. i tried to flash clean bios from manual on this site, from dos with atiflash, no changes. when 4870 works together with pci vga card, fan is always spinnig. i have cheap winpower 500w power supply, wich was designed for pentium 4 systems. should i buy new power supply or its something else?

 

[kenkickr]

What is the rest of your system specs. Can't find much on Winpower 500W but possible could be due to the PSU just not having enough AMPS for your card. Anything else out of the ordinary?

 

[gmytis]

cpu is intel quad q6600, motherboard asus P5KPL/1600, 2x2gb ram.

about winpower:
Brand new Winpower Silent ATX 500W Power Supply Unit is Ideal for AMD & Intel P4 systems. S-ATA power connector also included with this power supply as standard. Brand New, retail box packaging including a full TM Supplies 12 months warranty. This item will be double boxed to ensure your item is received in excellent condition.
Winpower ATX 500W PSU
Package type retail
500 Watts continuous power rating

120mm large silent cooling fan
High efficiency and low noise
Standard ATX specification
Over power protection
Short circuit protection
Lightening static protection
100% full load burn-in
1.5Kv Hi-Pot Test Pass, FCC CE approved
2 x Internal cooling fan
AC input 230X, 50-60Hz
Dimensions: 150 x 86 x 140 (mm)



Connectors Included:
1 x 24 & 20 Pin Main Power
1 x 4 pins Main Power
4 x HDD/CD-ROM Power
1 x FDD Power
1 x Serial ATA

 

[kenkickr]

I was looking more for efficency rating and some info about the rails and amp output. I would say I'd try a different, more reliable PSU manufacturer like Antec, PC Power and Cooling, OCZ, Corsair, or Enermax. Hell, even FSP makes some really nice PSU's for cheap. This would be my recommendation, http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005

 

[gmytis]

ok, i will try with your recommended psu, just bought it from ebay, will see next week.
i checked on ati site, that power supply is in recommendation list for my card.

 

[chuck216]

I'll tell you right now it's the power supply. It may be new but it's junk. I'm amazed that PSU would even have 2 6 pin PCIe power connectors. It doesn't list number of 12 v rails or amperage but from pics of it online. I'm guessing 2 rails of about 16A~ 18 amps each. Which I'm sorry isn't enough to power a 4870.

You get what you pay for though.

I agree with kenkicker's recommendation, either that or the tx750w.

 

[gmytis]

ok, so i just tried with CORSAIR CMPSU-650TX 650W, still same situation here.
no post and black screen. should reflash bios?

 

[nafets]

Was the HD4870 new or used? If used, you might have a dud.

 

[gmytis]

it is new.

 

[nafets]

Have you tried running the HD4870 in the black PCI-E x16 slot (runs @ x4/x1)?

Make sure your motherboard has the latest BIOS. Flashing your HD4870 with different BIOSes probably won't change anything...

 

[gmytis]

yes i tried to run from both connections, black and blue.
and updated motherboard to latest bios.
still the same